Vertical boiler



. HALLANDER.

VERTICAL BOILER.

APPLICATION mep unc.5.191s.

Patented Feb. 14, 1922.

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S. HALLANDER.

VERTICAL BOILER.

APPLICATION FILED DEC.5. 1919.

1,406,729. Patented, Feb. 14, 1922.

2 SHEETS-SHEET 2.

UNITED STATES yPATENT GFFICE.

VERTCAL BLER.

Specification of Letters Patent. Pgwnted Feb, 14, 1922,

Application led December 5, 1919. Serial No. 342,679.

T0 all whom t may con-cera:

Be it known that I, SAMUEL llALLANDnR, a citizen of the lominion ofCanada, residing at Vancouver, in the Province of British Columbia,Canada, have invented certain new and useful Improvements in VerticalBoilers, of which the fol-lowing is a specification. y

This invention relates to a steam generating boiler of the verticalclass and having steam generating tubes supplementing the heatingsurface of the fire box.

rihe invention is particularly described in the following specification7reference being made to the drawings by which it is accompanied, inwhich:

Fig. 1 is a front elevation and half section of the boiler.

Fig. 2, a sectional plan on the line 2 2 in. Fig. 1, and v l Fig. 3, asectional plan on the line 3 3 in Fig. 1.

The boiler comprises an outer cylindrical shell 2 and an innerconcentric `lireoox shell 3, which latter is preferably corrugated toafford a more effective heating surface and oppose a better resistanceto collapse under pressure.

At the bottom the inner and outer shells are connected together on abase ring 4 which is preferably madeof two rings of plate, one of whichmay be produced as at 5, to form the ash-pit which has the customarydoor aperture. y

These rings t are carried upward to reinforce the door aperture 6 of theboiler firebox at the approximatey level -of the underside of which isthe grate 7.

At a suitable height above the grate 7 the inner nre-box shell 3 has anupwardly projecting circular bulge 8, the reason of which will beexplained later.

The upper end of the fire-box shell 3V is inwardly flanged to support anannularV steam chamber-9 which is formed by a down wardly convex ring 10and a similar oppositely convex ring 11, the outer edges of beth ofwhich rings are secured to the outer shell 2 of the boiler and the inneredge of both to a cylinder 12 which forms alsok the uptakek from thefire-box. l

Between the'bulge 8 of the "hre-box and the inner part of the' lower end10 of the steam chamber 9, coil tubes'l extend, the same being arrangedin concentric circles, see Fig. 3. These tubes 1.5 are coiled altheouter shell 2 has a series of apertures 1.6 to provide for the downwardcirculation of the water induced by theupward circulation through t-hetubes 15.

To afford access to the tube ends in the lirebox shell hand holes 17 areprovided in the outer shell 2 around the Vbulge 8, and access to theupper ends of the same is afforded by a man-hole 18 in the upper ring 1lof the steam space 9. Provision is also made on this ring for the safetyvalve at 19 and the customary steam space mountings; while the feed andblow-olf connections are made adjacent the base ring 4;.

A circular baille 23T5eif lire-clay or other refractory material issuspended below the lower end of the uptake to prevent direct access ofthe llame through the central part and to cause the heated gases totravel among the tubes 15. A shield plate 2O is supported within theuptake to protect the plate where it is in the steam space.

To enable the condition of the lire to be examined, particularly whenoil `fuel is being used, tubular viewing apertures `23 may be insertedat intervals through the outer and lire-box shells around the upper partof the lire-box, which apertures will be closable in any convenientmanner with plugs or the like.

With this construction I am enabled to obtain higher working pressurewith a lighter construction of boiler and one' occupying less space thanthe standard Scotch marine boiler for which it may be considered asubstitute. Being of small diameter it can be installed or removedwithout disturb.- ing the ships fittings and, if standardized,- its costwill compare favourably with boilers of the class which `it may berequired `to replace.

The ineife'ctive horizontal furnace is eliminated and? it has no flatsurfaces to stay. Tt has a high steam generating efliciency, will attainits working pressure in a minimum of time and without injury when soformed, as the, form and construction are such th at a minimum of stressis imposed byv expansion and contraction. It is also economical in theuse of uel and is equally adaptable for use with solid, liquid orgaseous -fuel.

Having now particularly described my invention, I hereby declare thatwhat I claim as new and desire to be protect-cd in by Letters Patent,is:

l. A vertical boiler, comprising an outer cylindrical shell, an innerfire box shell, the lower edge of which is secured to that of the outershell, an annular steam chamber secured within the upper end of theouter shell to the lower end of which chamber the inner lire box shellis connected, the bottom of the annular chamber bein apertured betweenthe outer and inner shell attachments, and a series of tubes extendingbetween the lower part of the inner hre box shell and the bottom of theannular steam chamber.

2. A Vertical boiler, comprising an outer cylindrical shell, an innerlire box shell the lower edge of which is secured to that oi the outershell which inner shell adjacent its lower end is provided with aninwardly projecting circumferential bulge, an annular steam chambersecured within the upper end of the outer shell to the lower end ofwhich chamber the inner lire box shell is connected, the bottom of th'eIannular steam chamber being apertured between the outer and inner shellattachments, and a series of tubes between the inwardly projecting bulgeof the lire box shell and the bottom of the annular steam chamber.

3. A vertical boiler, comprising an outer cylindrical shell, an innerfire box shell the lower edge of which is ,secured to that of the outershell, Vsaid iire box shell having adjacent the lower end an annularcircumferential bulge inwardly projecting from its mean diameter, whichmean diameter is maintained above and below the bulge, an annular steamchamber secured withiny thc upper end of the outer shell to the lowerend of which chamber the inner fire box the upper end of the outer shellto the lower end of which chamber the inner fire box shell is connected,the bottom of the steam chamber being apertured between the outer andinner shell attachments, and coiled tubes between the bulge of the lirebox shell and the underside of the steam chamber, said coiled tubesbeing disposed in concentric circles within the cross sectional areawithin the fire box shell. j

5. A vertical boiler comprising an outer shell, an inner shell, a basering the thickness of which approximates that of the plates from whichthe boiler is made and onv which the lower. ends of the outer and innershells are secured, said boiler having a lire door aperture, said basering being produced upwardly and carried around the lire door apertureto reinforce it and being projected downwardly below the boiler shellplates to form the ash pit.

6. A vertical boiler comprising an outer cylindrical shell, a base ring,an inner fire box shell, the lower, end of which is secured to said basering, and an outer shell, an annular steam chamber forme-d of twooutwardly convcxed annular ends, the outer edges of which are securedthe required distance apart within the upper end of the outer shell, aninner shell to which the inner edges of the annular ends of the steamchamber are secured, the upper edge of the inner fire box shell beingconnected to the lower annular end of the steam chamber, which end isapertured between the inner and outer shells, and coiled tubes extendingfrom adjacent the lower end of the lire box shell to the lower end ofthe steam chamber. y e

7. A vertical boiler, comprising an outer cylindrical shell, ,an innerlire box shell the lower edge of which is secured to that of the outershell, said fire box shell having adjacent the lower end an annularcircumerential bulge inwardly projecting from its meanl diameter, whichmean diameter is maintained above and below the bulge,

an annular steam chamber secured within the upper end of theouter-shellto the lower end of which chamber the inner fire box shell is connected,the bottom of the steam chamber being apertured between the outerandinner shell attachments, and coiled tubes between the bulge of thefire box shell and the underside of the steam chamber, said coiled tubesbeing disposed in concentric circles within the cross sectional areaenclosed within the fire box shell, the adjacent coils in each ringbeing right and left alternately with the coils interprojecting. f Intestimony whereof I affix my signature. l

' SAMUEL HALLANDER.

